3.3V USB to UART Interface Cable wiring

Steve2381

Steve2381

Senior Member
Hey all

I have one of these speech modules lying around here in the workshop and want to have a play...

http://www.robotshop.com/uk/easyvr-speech-recognition-module-30.html#reviewBox

However, it needs a programming lead - that I do not have, and it hurts to cough £12+postage for a simple USB lead I can make here.

http://www.robotshop.com/uk/quickusb-33v-usb-to-uart-interface-cable.htmlhttp://

Anyone know the pinout for this lead? I have Googled, but cannot find a definitive answer

Edit... I am thinking this isn't just a simple lead now. Clue is in the name of the item!
 
PhilHornby

PhilHornby

Senior Member
No RTS

Steve2381 said:
http://www.ebay.co.uk/itm/USB-to-TTL-UART-CH340-Serial-Converter-Module-3-3-5V-with-DTR-pin-lead-UK-FAST-/332135565483
Click to expand...
That module doesn't make RTS available - whereas the 'real' one does. Presumably the programming software actually makes use of RTS/CTS?.

Some modules have the signals available, but don't come with a header pin installed - so you should find one if you hunt around. (Steer clear of anything saying FTDI on it though - if there's the faintest chance of it being fake, they are a sod to get working again (I reprogrammed the USB PID of mine to 0xDEAD and modified an old driver to match :p)).
 
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